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L. PIRDUN.

HEATING SYSTEM.

APPLlcAnoN man SEPT. l1. |920.

Patented Dec. 5, 1922.-

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...al ...l lll Il HEATING SYSTEM.

APPLICATION FILED SEPT. l?. |920.

Patented Dec. 5, 1922.

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Patented Dec. 5, 1922.

LEWIS PIRDUN, OF SAND SPRINGS, OKLAX-IDMA. l

l'. Application filed September 17, 1920. Serial No. 410,914. I y

To all whom t may concern Be it known that l, Lnwis PIRDUN, a citizen of the United States, and a resident of Sand Springs, in the county of Tulsa and State of Oklahoma, have invented certain new and useful improvements in Heating lSystems; and I do hereby declare the following, to be a full, clear, and'exact description of the invention, such as will. enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in heating systems, and more particularly to such as employ 'fluid fuel,-one object of the invention being to provide a simple automatically controlled according to -the.V

temperature of the air or other heating medium within the furnace, thus automatically controlling the temperature of the rooms of a lbuilding to which the heated air or other medium is fed from the furnace.

In the accompanying drawing; Figure 1 is a diagrammatical view illustrating my invention; Figure 2 is a view taken at right angles to Figure l but omitting the central compressor station; Figure 3 is a sectional view showing a burner which may be employed in my improved system, and Figure 4 is a view, partly in section, illustrating means for automatically controlling supply to the burner. My invention contemplates a system in which compressed air is supplied from a central station in a town, city or other community, to burners for furnaces in numerous houses in the community for feeding liquid fuel to said burners with the air, but it will suffice for the purpose of this case to show and describe the invention in connection with a single furnace and building as it will be understood that when burners are employed in two or more buildings, it is simply necessary to run branch pipes from the main air line supplied from the central compressor station, to the burners in the various buildings. l

l represents the outline of a building, in

the celler of which, a furnace 2 is located, l

said furnace'having a combustion chamber connected in any v suitable manner with smoke iiue t, and an air chamber 5,v with cates. The inlet end of the cold air flue 6 is open and this open end may be located under the porch 7 of the building. rlh'e cold air iiue may be provided with 'a branch 8 to ycommunicate with one of the rooms 9 of the building, and y vided at the juncture of the two inlet portions of said flue.

A hot air receiver ll is located at thevtop of the furnace structure and 4communicates with the air chamber 5,-said hot air receiver having connected therewith, hot air iiucs'lZ leading to the various rooms of the building. `Located within the hot air receiver so as to a damper l() may be prof j be subjected to the heat units where the saine are-of maximum degree of tempcraturmis a' tank 13 towhich water is supplied by a pipe lli from any rconvenient source of supply.

rl`his tank is to be kept partially iilledivith water so that a steam space will be provided above the water level and said tank is providedV with a suitable safety valve l5 located near one end thereof `which projects outwardly beyond the hot air receiver and beyond the-furnace wall. j i 5 A burner 16 projects into the combustion chamber 3 of the furnace and is provided with an oil passage 17 and an air passage 18. i

A ytank 19 for liquid fuel may bc .located outside of the building and,'if desired, this tank may be buried in the ground and pro@ vided with a capped filling tube 20. A, pipe 192i conveys` oil from the tank ,'19 to the burner. f f

A compressor plant indicated at 2l and equipped with a suitable air compressor, is

located at some convenient central point in a l town, city or other community and is connected by suitable underground pipes, such as indicated at 22, with the air passages of burners in the various buildings in which the same are installed. 4

Each burner is provided with valve mechanisms 23 for controlling the passage of oil and air through the burner and as the two valve mechanisms for each burner may be the same in construction, a description of one will suiiice for both. Each valve mech-` anism comprises a valve 23a for controlling the inlet'of oil (or air) and its stem is connected with one end of a lever 24. This le- 10o nl ilo e0 `which one end of a cold airl flue 6 communiy ver is pivotally connected with a standard 25 which `projects upwardly vfrom a casing 26 secured to the burner and the chamber of this casing is divided by a flexible diaphragm E27. It plate 28' rests upon the diaphragm 27 and from this plate, a stem 29 projects upwardly through the top of the casing 26 and is pivotally connected with the short arm of the lever 2li. A spring 30 tends to force the long arm of the lever upwardly and normally hold the valve 23a open. A. pipe 3l is connected at one end with the steam space of the water tank i3 and its other end is connected with the diaphragm chambers of both valve mechanisms, so that the steam pressure will so act upon the diaphragms 27 as to control the oil and air inlet valves.

vt will be observed that the compressed air suppliedV from a central station andl passing through the burners will cause a flow of liquid fuel from the tanksv 19 to the burners, and said fuel mixing with the air will be projected into the combustion chamber of the furnace, where it will be burned to `supply heat to the air within said furnace. The hottest portion of the air within the furnace will be within the hot air receiver 1l from which such air will be conveyed to the rooms of the building. When the temperature within the receiver l1 reaches a high degree and causes the gen eration of a correspondingly high steam pressure, such pressure acting against the diaphragms of the valve mechanism will partially or wholly close the air and oil inlet Valves and thus automatically control the supply of fuel to the furnace according to the degree of temperature reached by the hot air supplied to the rooms of the buildgBranch lines may be taken from the main compressed air lines to convey compressed l prefer to use light fuel oil.

incense Slight changes might be made in the details of construction of my invention without departing from the spirit thereof or limiting its scope and hence l do not wish f to restrict myself to the precise details herein set forth. f l

Having fully described my invention what l claim as new and desire to secure by Letters Patent, is

l. The combination with a furnace having` an air chamber, and a hot air receiver at the top of the same and communicating therewith, of a water receptacle iny said hot air receiver, a burner entering `the combustion chamber of the furnace, a source of liquid fuel supply communicating with said burner, a source of compressed air communicating with said burner, valves for c0ntrolling the supply of fuel and compressed air to the burner, pressure operated means for controlling the operation of said valves,

and pipe connections between the pressure operated valve controlling means and the steam space of said water receptacle.

2. rlhe combination of a furnace having a hot-air receiver,y a water-tank in the hotair receiver of the furnace, a burner arranged to heat the furnace, means for supplying liquid fuel and an atomizing agent to the burner, valves in the passages for said fuel and agent to control the admission of the same to the burner, a casing, a diaphragm in said casing, a pipe leading from i the steam space of the water tank into said casing below the diaphragm therein, levers fulcrumed upon said casing and each con.- nected at one end to one of the said valves and at the opposite end with said diaphragm, and springs arranged below the respective levers at the ends thereof connected with the valves and tending constantly to lift the levers whereby the valves will normally be open.

ln testimony whereof, l have signed this specification in the presence of two subscribing witnesses.

LEWIS PIRDUN.

Witnessesz JOHN KING, J. E. DONNELLY. 

